/*
 * MIT License
 *
 * Copyright (c) 2020 wen.gu <454727014@qq.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/***************************************************************************
 * Name: mp_buffer.cpp
 *
 * Purpose: the data buffer for micro player
 *
 * Developer:
 *   wen.gu , 2018-09-03
 *
 * TODO: 
 *
 ***************************************************************************/
 

/******************************************************************************
**    INCLUDES
******************************************************************************/
#include <assert.h>
#include "mp_buffer.h"

/******************************************************************************
**    MACROS
******************************************************************************/

/******************************************************************************
**    VARIABLE DEFINITIONS
******************************************************************************/



/******************************************************************************
**    FUNCTION DEFINITIONS
******************************************************************************/

MPBuffer::MPBuffer(uint32_t capacity)
    :mOwnsData(true)
{
    mData = malloc(capacity);
    if (mData == NULL)
    {
        mCapacity = 0;
        mRangeLength = 0;
    } 
    else
    {
        mCapacity = capacity;
        mRangeLength = capacity;
    }
}

MPBuffer::MPBuffer(void* data, uint32_t capacity)
    :mData(data),
     mCapacity(capacity),
     mRangeLength(capacity)
{
    /** todo something */
}

MPBuffer::~MPBuffer()
{
    if (mOwnsData) 
    {
        if (mData != NULL) 
        {
            free(mData);
            mData = NULL;
        }
    }
}

void MPBuffer::release()
{
    if (mObserver == nullptr)
    {
        delete this;
        return;
    }

    mObserver(this);
}

////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////

uint8_t* MPBuffer::base()
{ 
    return (uint8_t *)mData; 
}

uint8_t* MPBuffer::data()
{ 
    return (uint8_t *)mData + mRangeOffset; 
}

size_t MPBuffer::capacity() const
{ 
    return mCapacity; 
}

size_t MPBuffer::size() const
{ 
    return mRangeLength; 
}

size_t MPBuffer::offset() const
{ 
    return mRangeOffset; 
}

int64_t MPBuffer::pts() const
{
    return mInfo.pts;
}

int64_t MPBuffer::dts() const
{
    return mInfo.dts;
}

////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////

void MPBuffer::setRange(size_t offset, size_t size)
{
    assert(offset <= mCapacity);
    assert((offset + size) <= mCapacity);

    mRangeOffset = offset;
    mRangeLength = size;
}

void MPBuffer::setObserver(MPSignalBufferReturned observer)
{
    mObserver = observer;
}



